<template>
  <view class="cart-container" v-if="cart.length !== 0">
    <!-- 收货地址组价 -->
      <my-address></my-address>
    <!-- 购物车商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧的图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 描述文本 -->
      <text class="cart-title-text">购物车</text>
    </view>
    <!-- 商品列表区域 -->
    <uni-swipe-action>
      <block v-for="(item, i) in cart" :key="i">
        <uni-swipe-action-item :options="options" @click="">
          <!--  @radio-change是自定义点击事件 需要通过组件来监听 -->
          <my-goods :item="item" :show-radio="true" :show-num="true" @radio-change="radioChangeHandeler"
            @num-change="numChangeHandler"></my-goods> 
          </uni-swipe-action-item>
      </block>
      </uni-swipe-action>
      <!-- 使用自定义结算组件 -->
      <my-settle></my-settle>
  </view>
 <!-- 空白购物车区域 -->
   <view class="empty-cart" v-else>
     <image src="/static/cart_empty@2x.png" class="empty-img"></image>
     <text class="tip-text">空空如也~</text>
   </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  // 按需导入 mapState 这个辅助函数
  import {
    mapState,
    mapMutations
  } from 'vuex'
  export default {
    mixins: [badgeMix],
    computed: {
      // 将 m_cart 模块中的 cart 数组映射到当前页面中使用
      ...mapState('m_cart', ['cart']),
    },
    data() {
      return {
        options:[{
          text:'删除',
          style:{
            backgroundColor:'#c00000'
          }
        }]
      };
    },
    methods: {
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount','removeGoodsById']),
      radioChangeHandeler(e) {
        // console.log(e)
        this.updateGoodsState(e)
      },
      numChangeHandler(e) {
        console.log(e)
        this.updateGoodsCount(e)
      },
     swipeItemClickHandler(goods){
       this.removeGoodsById(goods.goods_id)
     }
    }
  }
</script>

<style lang="scss">
  .cart-container {
    padding-bottom: 50px;
  }
  .cart-title {
    height: 40px;
    display: flex;
    align-items: center;
    font-size: 14px;
    padding-left: 5px;
    border-bottom: 1px solid #efefef;

    .cart-title-text {
      margin-left: 10px;
    }
  }
  .empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;
    .empty-img {
      width: 90px;
      height: 90px;
    }
    .tip-text {
      font-size: 12px;
      color: gray;
      margin-top: 15px;
    }
  }
</style>
